Multiplier for looms.



H. 0. NELSON.

MULTlPLlER FOR LOOMS.

APPLICATION FILED AUG-7| 1912.

Patented July 6, 1915.

6 SHEETS-SHEET-l.

H. O. NELSON.

MULTIPLIER FOR LOOMS.

APPLICATION FILED AUGJ, 1912.

K 1 ma T- 6n w m s m Mu me nU t a P PLANOGRAPH :0, WASHINGTON, D c.

H. 0. NELSON.

MULTIPLIER FOR LOOMS.

APPLICATION FILED AUGJ. m2.

' 1,145,030. PatentedJ 6,1915.

' SSHEE EET3- 1 H l WW -H. 0. NELSON.

MULTIPLIER FOR LOOMS. APPLICKTION FILED AUG.7,19I2.

Patented July 6, 1915.

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WITNESSES INVENTOR H. 0'. NELSON.

MULTIPLIER FOR Lobms.

APPLICATION FILED AUGJ. I912; l,14=5,.030o

Patented July 6,1915.

6 SHEETS-SHEET 5.

arranmsrs H. 0. NELSON.

MULTIPLIER FOR LOOMS.

APPLICATION FILED AUGJ. 1912.

1,145,030, Patented July 6, 1915.

6 SHE ETS-SHEET 6.

' WITNESSES. INVENTOR ATTORNEYS are.

HARMON O. NELSON, OF WHITINSVILLE, MASSACHUSETTS, ASSIGNOR TO THE WHITIN MACHINE "WORKS, 013 WHITINSVILLE, MASSACHUSETTS, A CORPORATION OF TMASSA- CHUSETTS.

MULTIPLIER FOB LOOMS.

maaoao.

To all whom it may concern:

Be it known that I, HARMON O. NELSON, a citizen of the United States, residing at Whitinsville, in the county of Worcester and Commonwealth of Massachusetts, have invented the following-described new and useful Improvements in Multipliers for Looms.

The invention consists in certain improve ments in the arrangement and combinations of parts, as hereinafter more fully pointed out, looking toward increased simplification of the general construction of multipliers and especially of the interconnecting gearing between the pattern and multiplier chains thereof, as well as toward greater compactness and durability and other advantages, all of which will be apparent to those skilled in this art.

The invention particularly involves certain simple and effective arrangements of gearing for driving the chain carriers, whereby the latter are positively locked against accidental movement between their active periods.

In the accompanying siX sheets of drawings forming part of this invention, Figure 1 is a side elevation of multiplier apparatus adapted for attachmentto a loom; Fig. 2 is a top plan thereof; Fig. 3 an end elevation; Fig. 4 an enlarged longitudinal section of the two pin wheels; Fig. 5 an end elevation from the opposite side of Fig. 3, showing parts in section; Fig. 6 is a general longitudinal section through the chain carriers on line VIVI of Fig. 3. Fig. 7 is a section on line VIIVII of Fig. 6; Fig. 8 is a similar section on line VIII-VIII of Fig. 6, and Fig. 9 a rear view detail of the gear shifting mechanism. 7

The apparatus comprises a main casting or frame portion 1 adapted to be attached to the loom frame as the immediate support of the parts of the pattern and multiplier apparatus, including the bracket arms 2, on which the pattern chain levers 3 are fulcrumed. These levers, in the present case, are for connection with a drop-box motion, but they may be regarded as representing any suitable pattern controlling connections, controlling either the box motion or'the harness motion of the loom as desired. The horizontal driving shaft 6 is journaled in the bracket arms 4: and 5 and is provided with a friction clutch 7 by which it is con- Specifieation of Letters Patent.

Patented July 6, 1915.

Serial No. 713,704.

nected to a gear 8, and through the latter it receives continuous rotary motion from the loom. At its opposite end it is supplied with a hand-wheel 9 by which it may be rotated against the friction of the slip clutch to adjust the pattern mechanism independently of the loom. Above and slightly to the rear of the drive shaft 6, the frame supports a second shaft 10, set-screwed therein, as indicated so as to form a fixed, though removable, part of the frame. On this shaft the pattern-chain carrier 11 and the multiplier-chain carrier 12 are both loosely mounted, one near each end. These carriers are double sprocket wheels of usual type, adapted to carry a usual type of pattern and multiplier chains 13 and 14., the function of which is well known and need not here be described. Any other type of pattern and multiplier surfaces or chains could be employed with equal facility, and the arrangement is such that the chains may surround the drive shaft as well as their carriers, and hang downwardly below the former as shown. The rollers or buttons 13 on the pattern chain 13 serve to lift the pattern levers 3 according to the pattern to be woven into the cloth, while the buttons 13, which are offset from the line of the buttons 18, are for the purpose of calling the multiplier chain into operation to effect its usual function. The rollers 1% on chain 1-41: are similarly for the purpose of calling the pattern chain into operation after it has been stopped to repeat the pattern, according to the usual operation of multipliers. The car rier wheels 11 and 12 are each connected at their proximate ends to the driven member of an intermittent, inter-locking gear couple, the driving members of which are carried on or driven by the main shaft 6, above referred to. On the pattern surface carrier 11, the driven intermittent gear member, is a star-wheel 15 engaged and driven by a pin gear 16, which is splined on the shaft 6, and hence directly driven thereby, as indicated. On the carrier 12 of the multiplier chain the driven intermittent gear member is a similar star-wheel 17, engaged and driven by a pin gear 18, also splined upon the driving shaft, the hub of this star-wheel 17 being notched, as shown at 19, so as to engage a pin 20 in the carrier wheel and thus be capable of rotational adjustment with respect to it.

The pin gears 16 and 18, which may be duplicates of each other, are each formed of a barrel portion marked respectively 21 and 22, and a pin 24 and 23, and provided with an annular groove 26, 25, by means of which they can each be axially shifted upon the drive shaft. When such pin gears are located in positions on the shaft in which their pins 23 and 24 are in the same plane as their corresponding star-wheels, it will be evident that rotation of the main shaft 6 will impart intermittent motion to such star-wheels, and thereby produce an intermittent rotation of the corresponding chain carrier, and it will also be evident that during the periods between such intermittent motions the said star-wheels will be locked against rotary movement by virtue of the engagement of their peripheral portions (15 and 17) with the barrel portion of the pin gear, this being the usual function of intermittent gear couples. When, however, the pin or pin-gear is shifted axially or otherwise adjusted so as to remove the pin, 23 or 2-1, as the case may be, from the plane of its starwheel, the intermittent motion of the latter will thereupon cease. The continued rotation of the pin Wheel will then h ave no driving effect upon the star wheel; the portion of its barrel, however, which extends beyond the end of the pin, such portion being of continuous circular ection, will be engaged with the star wheel and will maintain it locked against rotary movement. Thus, by alternately shifting the pin gears into their positions in which their pins engage their star-wheels and the positions in which only the circular extended ends of their barrel portions engage the starwheels, the latter may be alternately rotated and locked against rotation, as desired. To accomplish such alternate control movement of the pin gears, a shipper lever 27 is provided on the front of the apparatus engaging in the an nular groove 25 of the pin gear 1.8, and a similar shipper lever 30 is provided on the opposite side, engaging the groove 26 of the pin gear 16, both shipper levers being mounted on the same cross pin 28. The spring 29, hooked into an arm on the shipper lever 27, tends to shift the pin'gear 18 to the position in which its driving engagement with the star-wheel 17 is disconnected. Similarly, the other shipper lever 30, under the pull of a similar spring 31, tends to throw the pin gear 16 into non-driving po sition with respect to its star-wheel. The cross-pin 28 is carried by a sleeve-head 32, set-screwed to the fixed shaft 10 between the two star-wheels and serving to space them apart. This same support carries the fulcrum pin 33 of the bell-crank chain-levers 34 and The former of these levers, 34L, overhangs the pattern chain 13 in a position to be engaged and lifted by the offset buttons 13" thereof, and its other arm 36 is adapted to engage with the upper arm 37 on the shipper lever 27 in such manner as to move that lever against the tension of its spring and cause it to shift the pin gear 18 into the position in which it will drive its star-wheel. Similarly the bell-crank chainlever 35 overhangs the multiplier chain 14 and is adapted to be engaged and lifted by rollers 14 thereof, whereby its other depending arm 3S, corresponding to the arm 36, will similarly engage the upper arm 39 of the shipper lever 30 to shift the pin gear 16 against the tension of its spring 31 into its driving position. The springs 29 and 31 by which the two shipper leversare infiuenced, are connected at their opposite ends to the chain-levers 3a and 35, so as to hold them also down against their respective chains.

From the foregoing, it will be seen that the operation of the apparatus is as follows: Assuming the loom to be in motion, it will drive the main shaft 6 through the gear 8 and slip clutch 7 say one revolution for each pick, andassuming the parts to be as shown in Fig. 1, the pin gear 16 will be driving its star-wheel 15, one division of the latter for each revolution, which is sufficient to give the pattern chain 13 its proper stepby-step advance, to raise and lower the pattern levers 3 according to the design previously determined by the arrangement of the rollers upon the chain. In the meantime the multiplier chain and its carrier wheel and star-wheel will be idle, the pin-gear 18 thereof serving to impart no motion thereto by reason of its pin being out of the plane of its corresponding star-wheel 17. The latter wheel, moreover, is positively held against rotation by virtue of its engagement with the extended cylindrical barrel of the pingear, as above explained, and in the position in which it is thus held, one of the rollers 14* on the multiplier chain 14 will be under the chain-lever 35, holding it in its elevated position, and throughthe connections above described, holding the pin-gear 16 in its driving position. This condition of the multiplier-chain results from its previous stoppage in this position. When, now, the offset button l3 rides under and lifts the chainlever 34, the shipper lever 27 becomes thereby actuated and slides the pin-gear 18 to the left, where its pin 23 will be brought into the plane of its star-wheel 17, and will thereupon begin to drive it. The movement thus imparted to the star-wheel 17 and hence to the chain-carrier '12, will immediately remove the roller 14* from under the chain-lever 35, and thereby release the pingear 16, so that it will now move under the action of its spring 31 into its non-driving, but star-wheel-locking, position and the movement of the pattern chain 13 will thereupon cease until another button 14* on the multiplier chain engages the chain-lever 35, which will restore the parts to the condition first described, that is to say, will place the pin gear 16 in driving relation with its starwheel and the immediately following removal of the button 13 from under the chain-lever 34 will release the pin gear 18, so that it will assume its non-driving but chain-locking position. In the short interval between the arrival of one button under its chain lever and the departure of the other, both pin gears will be momentarily engaged in their driving relations to their star-wheels, but in positions in which their respective pins have not yet engaged the notches in the wheels. T he shifting of such gears on their splines is thus accomplished when free from the pressure of driving.

It will be evident that the principle of cross-gearing above explained is quite independent of the particular mode of embodiment in which it is constructed, and that various modifications can be made in the form, arrangement and proportions of the parts, without departing from the invention.

I claim:

1. In a loom-pattern mechanism, a horizontal rotary shaft, a fixed support parallel therewith, chain carriers mounted for inde pendent rotation on such support and provided with gear wheels adapted to be driven each by a corresponding driving member on the said rotary shaft, and two bell cranks carried by said parallel support, each operated by contact with a chain on said carriers and adapted to control the operation of said driving members upon their respective gear wheels, in combination with means for imparting continuous rotary motion to the horizontal shaft.

2. In a pattern mechanism, two chain carriers each provided with a star-wheel concentrically secured to their proximate ends and having chains adapted to operate bell cranks fulcrumed on supports between such star-wheels, in combination with said bellcranks and a rotary shaft provided with means to drive said star-wheels under the control of the bell-cranks.

3. In a loom pattern mechanism, a frame supporting a loom-driven rotary shaft adapted also to be turned by hand, a fixed shaft also supported by the frame, two chain-carriers rotatably mounted on the fixed shaft, a sleeve head fixed between said carriers, means whereby said carriers are driven by the rotary shaft and chain levers fulcrumed on the sleeve head adapted to control the driving connections between said shaft and carriers.

a. In a loom pattern mechanism, the combination of a frame adapted to be fastened to the loom frame, a loom-driven rotary shaft therein adapted also to be turned by hand, a fixed shaft also carried on said frame and having two chain carriers mounted loosely upon it, means whereby said carriers may be driven by the shaft, and a chain lever associated with each chain carrier adapted to control the driving connection between said shaft and the other chain carrier, whereby one chain may start and stop the other, said chain levers being pivotally supported upon the said second shaft and be tween said carriers.

5. In loom pattern mechanism, the combination of pattern and multiplier chain carriers mounted side by side and connected at their proximate ends to the driven members of two intermittent gear couples, respectively, the driving members of said gear couples, and a leverage system whereby either chain controls the driving action of the driving member of the other chain, said system comprising chain levers, the actuated arms whereof extend transversely to the path of motion of the chains on said carriers for actuation by contact therewith.

6. In a pattern mechanism, two chain carriers, a rotary shaft having means thereon for driving the chain-carriers, a second shaft supporting said carriers, a pair of chain levers pivotally mounted on a part secured to said second shaft on axes transverse thereto and between the carriers, said levers being provided with parts extending toward said rotary shaft and adapted to control the driving connection thereof with said carriers.-

7. In a pattern mechanism, multiplier and pattern chain carriers coaxially mounted on a suitable support and provided with duplicate gear wheels at their proximate ends, duplicate driving members for said gear wheels, respectively, duplicate chain levers actuated by the chains on said carriers and fulcrumed between the latter, and duplicate controlling connections between said levers,

and said driving members, disposed on opposite sides of the said support.

8. In a loom pattern mechanism, pattern and multiplier chain carriers, a star and pin wheel couple for driving each carrier, said pin wheels being mounted to rotate on the same axis, and chain levers for each carrier, each pivoted to swing on an axis which is transverse to the pin wheel axis and disposed between the said carriers, means whereby each lever controls the drive of the opposite carrier and means for driving the pin wheels.

9. In a loom pattern mechanism, pattern and multiplier chain carriers, each provided with a star and pin wheel couple for driving the same, the said carriers being mounted to rotate on the sameaxis and the said pin wheels being also mounted to rotate on the same axis, in combination with the chain levers directly engaged by each carrier each pivoted on an axis which is transverse to the axis of the carriers, means whereby each lever controls the rotation of the opposite carrier and means for driving the said pinwheels.

10. In a loom pattern mechanism, pattern and multiplier chain carriers, a star and pin wheel couple for driving each carrier, a chain lever for each carrier pivoted on an axis transverse to the axis of rotation of its pin wheel and extending transversely to the motion of the actuating chains thereof, and means whereby each lever controls the drive of the opposite carrier comprising a shipper lever engaging the pin wheel of such carrier and adapted to shift the same into and out of driving engagement with its corresponding star wheel.

11. In a loom pattern mechanism, pattern and multiplier chain carriers, a star and pin wheel couple, for driving each carrier, a chain lever for each carrier, means whereby such lever controls the drive of the opposite carrier comprising a shipper lever operated by the chain lever, and a spring connecting both said levers.

12. In a loom pattern mechanism, pattern and multiplier chain carriers, a star and pin wheel couple for driving each carrier, a chain lever for each carrier fulcrumed on a common axis, which is located between such carriers, connection from each lever for controlling the operation of the opposite star wheel and means for driving the pin wheels.

13. In a loom pattern mechanism, pattern and multiplier chain carriers, a star and pin wheel couple for driving each carrier, a bellcrank chain 1 ver for both carriers each fulcrumed on an axis between the star wheels and having arms extending toward the pin Wheels, and means whereby such arms control the driving of the star wheels.

14. A loom pattern mechanism comprising a bracket adapted for connection to the loom frame, a rotary drive-shaft journaled in such bracket, a second shaft supported in the same bracket, multiplier and pattern chain carriers rotatable on the axis of said second shaft and provided respectively with star wheels for rotating them, and pin-Wheels for each of such star wheels mounted on the drive shaft, in combination with chain levers engaging the chains on each carrier, pivot means for such levers carried on the said second shaft, and connections from each lever for controlling the rotation of the opposite chain carrier.

15. In a loom pattern mechanism, two chain carriers rotating on a common axis and having star wheels applied to their proximate ends, two bell crank chain levers for such carriers having a common axis between such wheels, in combination with a driving pin-wheel for each star wheel, a common shaft on which such pin wheels are splined, and connection on opposite sides of such shaft between each pin wheel and one of the said bell crank chain levers.

16. In a loom patterm mechanism, a bracket adapted for connection to the loom frame, a rotary loom driven drive shaft journaled in the bracket, a second shaft fixed in the same bracket, chain carriers provided with star wheels journaled on this second shaft and pin wheels splined on the drive shaft for driving the said star wheels, in combination with a chain lever for each carrier having a fulcrum support on the second shaft, and having arms disposed on opposite sides of said shaft, and a shipper lever engaged by each of said arms to shift the said pin.

wheels.

17. In a loom pattern mechanism, the combination of multiplier and pattern chain carriers having pin and star wheel driving gearing and cross-connecting lever means whereby one controls the operation of the other, a shaft supporting the said star wheels, a sleeve on said shaft serving to space the star wheels apart and one or more pins on said sleeve forming a fulcrum for said lever means.

In testimony whereof, I have signed this specification in the presence of two witnesses.

HARMON O. NELSON.

Witnesses: 7

ROBERT L. METGALF, OSCAR L. OWEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

